52021 ÷ 5 = 10404 R1
Let's divide 52021 by 5.

Step 1:
5 goes into 5 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 5 from 5 to get 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 5

Step 2:
5 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of of the result. 
Result so far: 10
Subtract 0 from 2 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 5

Step 3:
5 goes into 20 4 times with a remainder of 0.
Write down 4 as next digit of of the result. 
Result so far: 104
Subtract 20 from 20 to get 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 5

Step 4:
5 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of of the result. 
Result so far: 1040
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 5

Step 5:
5 goes into 21 4 times with a remainder of 1.
Write down 4 as next digit of of the result. 
Result so far: 10404
Subtract 20 from 21 to get 1.

The final result is 10404 with a remainder of 1.